mirror of
https://github.com/ClickHouse/ClickHouse.git
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111 lines
3.5 KiB
C++
111 lines
3.5 KiB
C++
#pragma once
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#include <unordered_map>
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#include <unordered_set>
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#include <mutex>
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#include <IO/Progress.h>
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#include <Interpreters/Context.h>
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#include <base/types.h>
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#include <Common/Stopwatch.h>
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#include <Common/EventRateMeter.h>
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/// http://en.wikipedia.org/wiki/ANSI_escape_code
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#define CLEAR_TO_END_OF_LINE "\033[K"
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namespace DB
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{
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struct ThreadEventData
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{
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UInt64 time() const noexcept { return user_ms + system_ms; }
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UInt64 user_ms = 0;
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UInt64 system_ms = 0;
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UInt64 memory_usage = 0;
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};
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using ThreadIdToTimeMap = std::unordered_map<UInt64, ThreadEventData>;
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using HostToThreadTimesMap = std::unordered_map<String, ThreadIdToTimeMap>;
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class ProgressIndication
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{
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public:
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/// Write progress to stderr.
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void writeProgress();
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void writeFinalProgress();
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/// Clear stderr output.
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void clearProgressOutput();
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/// Reset progress values.
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void resetProgress();
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/// Update Progress object. It can be updated from:
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/// 1. onProgress in clickhouse-client;
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/// 2. ProgressCallback via setProgressCallback methrod in:
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/// - context (used in clickhouse-local, can also be added in arbitrary place)
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/// - ISource (also in streams)
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/// - readBufferFromFileDescriptor (for file processing progress)
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bool updateProgress(const Progress & value);
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/// In some cases there is a need to update progress value, when there is no access to progress_inidcation object.
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/// In this case it is added via context.
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/// `write_progress_on_update` is needed to write progress for loading files data via pipe in non-interactive mode.
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void setFileProgressCallback(ContextMutablePtr context, bool write_progress_on_update = false);
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/// How much seconds passed since query execution start.
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double elapsedSeconds() const { return getElapsedNanoseconds() / 1e9; }
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void addThreadIdToList(String const & host, UInt64 thread_id);
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void updateThreadEventData(HostToThreadTimesMap & new_thread_data);
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private:
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size_t getUsedThreadsCount() const;
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double getCPUUsage();
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struct MemoryUsage
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{
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UInt64 total = 0;
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UInt64 max = 0;
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};
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MemoryUsage getMemoryUsage() const;
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UInt64 getElapsedNanoseconds() const;
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/// This flag controls whether to show the progress bar. We start showing it after
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/// the query has been executing for 0.5 seconds, and is still less than half complete.
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bool show_progress_bar = false;
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/// Width of how much has been printed currently into stderr. Used to define size of progress bar and
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/// to check whether progress output needs to be cleared.
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size_t written_progress_chars = 0;
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/// The server periodically sends information about how much data was read since last time.
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/// This information is stored here.
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Progress progress;
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/// Track query execution time on client.
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Stopwatch watch;
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bool write_progress_on_update = false;
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EventRateMeter cpu_usage_meter{static_cast<double>(clock_gettime_ns()), 3'000'000'000 /*ns*/}; // average cpu utilization last 3 second
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HostToThreadTimesMap thread_data;
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/// In case of all of the above:
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/// - clickhouse-local
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/// - input_format_parallel_parsing=true
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/// - write_progress_on_update=true
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///
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/// It is possible concurrent access to the following:
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/// - writeProgress() (class properties) (guarded with progress_mutex)
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/// - thread_data/cpu_usage_meter (guarded with profile_events_mutex)
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mutable std::mutex profile_events_mutex;
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mutable std::mutex progress_mutex;
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};
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}
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